Weir



July 3l, 1934. H. ZIMMERMANN WEIR Filed Aug. 22, 1932 2 Sheets-Sheet lMgg.

/n ugento/.- AL 3 1 M W1 @www1 n July3l, 1934. H. ZIMMERMANN wEIR FiledAug. 22, 1952 2 Sheets-Sheet 2 Patented July 31, 1934 l; UNITED sT'ATesWEIRk Hans Zimmermann, Dortmund, Germany, as-

sgn or to` the firm Vereinigte` Stahlwerke, Aktiengesellschaft,Dusseldorf, Germany Application August 22, 1932, serial No; 629,927`

` In Germany February 24, 1931 Y c claim.V (cl. 61-26) l the flapslidihgtightlyagainst the surfaces of the shields facing the water.` Ifin such cases the Weir lrecess has to be sealed against any overflowwater, .thentheside shields must extend over the whole' Wdth-` of therecess'. This however gives l rise to certain difiiculties in thearrangements for moving theflap, since theap actuating means 'mustlYeither go round the lateral shields or through them. In the case of apswhich, for

the' purpose of preventing. the weirv itself from being wetted by wateroverflowing, are made as wideas the Weir itself, there will obviouslyhave tobefalconsiderable length of the lateral seal. Furthermore thesealmust be afdxedto the movable flap and this renders `difficult accessto, and

reltightening of, leaking sections' because the overflow water entirelyshuts off the space under the flap where the re-tightening has to becarried out and which isalso enclosed on top bythe pent 'water and atthesides by the shields.

The present invention overcomes these difliculties `by the'fact thattheside connementof the water stream whichflows over `the flapl iseffected` bya shield which "is 'connected with the flap a'dwhichprojectsbehind a side wall of the u 95 Weir body against which wall theshield is sealed by a tight sliding means extending over the Wholeheight of the flap. The seal is stationary and can therefore be easilyre-tightened from the recess, in any position of the iiap While theoperator is in a perfectly dry place. The Weir wall which the flapextends, it is ensured that if the seal at the side should leak, thespace under the ap does not freeze in Winter and hinder the movements ofthe flap. Y y

In order to illustrate the invention the drawings Nos. 1 to 4 areattached.

Figurel is a partialy cross section through the Weir and the flapshowing `the side shieldin side elevation. p

Figure 2 is the corresponding plan.` j Figures 3 'and 4 are anAelevation andV aground 6.9 plane respectively of a particular' form ofapplication of the side seal and itsre-.tightening dev1ce.

Fig. 5 is a (partial) longitudinal Vsection of the re-tightening deviceaccording to line 5--5V of Fig. Land w Fig.v 6 is a plan view accordingto Fig. 5.

In Figures 1 and 2, 1 is the 'weir itself, 2 is `the flap, 3 is a sidewall affixed to the weir itself, f4 is thexed side seal of the ap, 17jis the means for 70 raisingY the flap, which may engage, for ext ample,at 5 with the bolt 7 which is arranged on the flap .and projects intothe Weir recess, 18 is the'means for lifting the weir which is connectedat 6 to the Weir. '8 is thewater flow when 75 the flap 2 has beenlowered through'an anglea yinto the position 2' which is shown in dottedlines. 9 is a side shield which is arranged on the Aflap and projectstowards the high water level behind the wall 3 on the air side thereofin such a way as to engage the said walllaterally. The position `of theside shield 9 when the flap '2 has been lowered into the position 2 isshown at9 in dotted lines. 10`is`the space between the side shield 9 onthe flap and the side wall 3 of the Weir,` which is free from water andinpwhich the means for re-tightening `the sealing devicefor the flapcanbe, arranged. j` y, It'is readily `seen that the lengthoff'tlielateral seal is limited to the elfective height h of the flap,and that no matter at what angle the iiap may rest, its position isunaltered. i

Figures 1 and 2 also show that no water can enter into the space underthe flap, because the side shield of the flap is firmly connected withits wall so that no impediment to the movement of the flap can resultfrom the formation of ice. These drawings also show that there-tightening means for the seal of the flap, which are arranged in thespace 10, are accessible from the 1.00 recess at all positions of theflap and even while the water is flowing over. It is further evidentthat the means 17 for raising the flap 2 can be secured thereto withinthe recess at any desired place, without interfering with any otherstruc- ,195 tural parts of the Weir. U

In Figures 3 and 4, the parts which are shown in Figures 1 and 2 aremarked by the same reference numbers. Thus 1 is the wall of the weiritself, 2 is the nap, 3 is the side wan of the Weir. 1&0

4 is the resilient side seal for the flap, 9 is the shield affixed tothe flap, is the space between the walls 3 and 9, 11 is an eccentricshaft which rests in bearings at 12 and 13 on the weir itself or on itsside wall 3 which serve also for mounting the seal 4, 14 is a ratchetwheel which is wedged on to the eccentric shaft 11 and with whichengages a pawl 15; 16 is a spanner by which the eccentric shaft 11 canbe rotated.

Figures 3 and 4 illustrate a particularly simple design forre-tightening the seal 4 and are meant to illustrate the advantage ofthe present invention, which consists in that. the sealing member can bere-tightened, mounted and removed easily from the recess no mater whatthe position of the flap may be. If the sealing device is to bere-tightened, when the spanner 16 isl put on to the upper end of theeccentric shaft 11 and the shaft is rotated in a direction to tightenthe seal 4 against the walls 3 and 9 until the requisite seal isaccomplished. After tightening of the seal the pawl 15 will help tomaintain the tightening'pressure. If the seal isfto be removed then theupper shaft bearing 13v is removed and the shaft 11 and the seal 4 are.taken out in an upward direction, whereupon the new seal and, afterthat, the eccentric shaft 11 are put into position from above. InFigures 5 and 6 the re-tightening means are more clearly shown; in Fig.5 which is a section seen from the up-stream side towards the downstreamside, l1 is the shaft of the tightening devicewhich isrotatably mountedbetween the side shield `9 of the flap and the side wall 3 of the Weirin the bearing plates l2 and 13 by means of the eccentrically disposedpivots 19 and 20, the upper pivot 16 being provided with the ratchetwheel 1.4 and a square-head for engagementl of a spanner 16 (see Fig.3). A pawl 15 which is row tatably mounted onthe plate 13 is held inengagement withl the ratchet wheel 14 by means of a spring 21 (see Fig.6).

In the above description the present invention is illustrated as appliedto a ood Weir. It

r is however not limited to this type of wei'r vbut can be used toadvantage with' all weirs which can be provided with superimposed flaps.In the place ofthe seal and the re-tightening means for the same whichhave been illustrated in Figi ures 3 and 4, and described hereabove,other such far as the invention is concerned, it does not matter whetherthe side shield 9 of Ithe flap 2 is arranged on the air side or on thewater side of the side wall 3 of the Weir l provided that the water flow8 is either totally or partly confined by theside shield 9 in relationto the recess.

What I claimand desire to secure by Letters Patent isz- 1. A weir of thetype having a superimposed ap, comprising a side wall to said weir, ashield secured to said flap at its side to confine water flowing oversaid weir and projecting behind said wall on the air side thereof, and aseal between said wall and said shield of a length substantially equalto the maximum effective height of said flap.

2. A weir of the type having a superimposed ap, comprising a side wallto said weir, a recess on the'air side of said side wall, a shieldsecured to said flap at its side to confine water flowing over vsaidweir 'and projecting' behind said wall on the air side thereof, av sealbetween said wall and said shield of a length substantially equal to themaximum effective height of said flap', and means accessible at alltimes from said recess for tightening said seal.

3. A weir as claimed in'claim 2,v wherein said means comprise bearingsin said weir wall, a shaft eccentrically mounted in said bearings, andmeans to rotate said eccentric shaft to tighten said seal.

4. A weir as claimed in claim 2 wherein said means comprise bearings insaid weir wall, a

shaft eccentrically mounted in said bearings, a

ratchet wheel upon saidshaft, a pawl engaging said ratchet wheel, and aSpanner Yto turn said shaft to tighten the said seal.

5. A weir of the type having a superimposed flap, comprising a side wallto said weir, a shield secured to said flap at its side to confine waterowing'over said weir and projecting behind said wall, and a seal betweensaid wall and said shield. 6. A weir of the type having a superimposedap rotatable about an axis on the weir, comprising side walls secured'to the weir, side shields secured to the ap for preventing water fromowing off laterally, said shields projecting towards the high waterVside behind the said walls,

stationary seals between the said shields and the -said walls, the saidwalls extendingwith their edge directed towards the low water side totheaxis of rotation of the flap.

HANS ZIMMERMANN.

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